Difference between Arteries, Veins, and Capillaries - What makes them Important

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What are the 3 types of Blood Vessels?

  • arteries

  • veins

  • capillaries

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Characteristics of the Arteries

  • carry oxygenated blood away from the heart

  • however pulmonary arteries carry deoxygenated blood from the heart to the lungs

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Characteristics of the Veins

  • carry deoxygenated blood to the heart

  • however pulmonary veins carry oxygenated blood to the heart

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Characteristics of the Capillaries

  • they have permeable 1 cell thick walls that allow the movement of oxygen, carbon dioxide, and nutrients by the process of diffusion

  • they can dilate (expand) when large amounts of oxygen are required

  • they can vasoconstrict (shrink) to redirect blood to area of need